- All sections
- B - Performing operations; transporting
- B32B - Layered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form
- B32B 5/28 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer impregnated with or embedded in a plastic substance
Patent holdings for IPC class B32B 5/28
Total number of patents in this class: 1040
10-year publication summary
72
|
90
|
86
|
86
|
79
|
84
|
65
|
51
|
39
|
12
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Toray Industries, Inc. | 6652 |
96 |
The Boeing Company | 19843 |
36 |
Mitsubishi Heavy Industries, Ltd. | 8217 |
28 |
Panasonic Intellectual Property Management Co., Ltd. | 27812 |
20 |
Mitsubishi Chemical Corporation | 4313 |
16 |
Hitachi Chemical Company, Ltd. | 2455 |
15 |
Hexcel Composites Limited | 172 |
15 |
Honeywell International Inc. | 13799 |
14 |
Nissan Motor Co., Ltd. | 12249 |
14 |
Hanwha Azdel, Inc. | 98 |
13 |
Cytec Industries Inc. | 407 |
12 |
Mitsubishi Gas Chemical Company, Inc. | 3188 |
12 |
Sumitomo Bakelite Co., Ltd. | 1416 |
11 |
E. I. du Pont de Nemours and Company | 4345 |
9 |
Nitto Denko Corporation | 7879 |
9 |
Cytec Technology Corp. | 328 |
9 |
JX Nippon Oil & Energy Corporation | 1019 |
9 |
Sekisui Plastics Co., Ltd. | 345 |
9 |
Teijin Limited | 1216 |
9 |
INOAC Corporation | 172 |
8 |
Other owners | 676 |